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相关实验视频

Updated: Jun 12, 2026

Immunocompetent Alveolus-on-Chip Model for Studying Alveolar Mucosal Immune Responses
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Published on: May 31, 2024

在芯片上重建器官水平的肺功能.

Dongeun Huh1, Benjamin D Matthews, Akiko Mammoto

  • 1Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, MA 02115, USA.

Science (New York, N.Y.)
|June 26, 2010
PubMed
概括

一个新的仿生微系统模仿了人类肺部的膜-毛细血管接口,揭示了呼吸中的机械应变如何加剧纳米颗粒的毒性和吸收. 这种肺上芯片模型为毒理学和药物查提供了洞察力.

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科学领域:

  • 生物医学工程 生物医学工程
  • 纳米毒理学研究
  • 呼吸系统生理学 呼吸系统生理学

背景情况:

  • 气膜-毛细管接口对于肺功能和气体交换至关重要.
  • 现有的细胞培养模型缺乏复杂性,无法完全复制体内肺部反应.
  • 了解肺内纳米粒子相互作用对于安全性评估至关重要.

研究的目的:

  • 开发和验证人类膜-毛细管接口的仿生微系统.
  • 研究机械应变对对纳米粒子和炎症刺激的肺部反应的影响.
  • 评估这种"器官在芯片上"模型对纳米毒理学和药物查的有用性.

主要方法:

  • 构建一个微流体装置,模仿膜-毛细血管屏障.
  • 细菌,炎症性细胞因子和二氧化纳米颗粒的引入到膜空间.
  • 应用循环机械应变来模拟生理呼吸.
  • 对纳米粒子吸收,运输和炎症反应的分析.
  • 与整个小鼠肺部研究的比较.

主要成果:

  • 微系统准确地复制了对刺激的综合肺部水平反应.
  • 循环机械应变显著放大了二氧化纳米粒子的炎症和毒性作用.
  • 机械应变增强了肺细胞吸收纳米粒子并将其运输到血液中.
  • 在微型设备中观察到的效应与整个小鼠肺部的发现相关.

结论:

  • 仿生"器官在芯片上"技术可以有效地模拟复杂的肺界面.
  • 机械力量在调节纳米粒子毒性和肺部反应方面发挥着至关重要的作用.
  • 这种微型设备是纳米毒理学,药物查和减少动物试验的宝贵工具.

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Last Updated: Jun 12, 2026

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